Improvement in woven-wire mattress-frames



t NITED STATES DAVID J. POWERS, 0E oHIcAeo, ILIJnvoIs.

IMPROVEMENT IN WOVEN-WIRE MATTRESS-FRAMES.

Specification forming part of Letters Patent No. 136, 180, dated February 25, 1873.

panying-drawing making a part of this specification, in \vhicl1 Figure 1 is a plan; Fig.2, a View of one end; and Figs. 3 and 4, enlarged details.

The objects of my invention are to so construct the frame which holds the woven wire that it can be readily taken apart for transportation and other purposes; to provide a ready method of tightening the woven wire; and to improve the wire itself.

In the drawing, A A are the side pieces of the frame. 13 B are end pieces placed within the side pieces, and pivoted thereto by means of bolts 1;, so that these end pieces can have a rocking movement. The woven wire F may be secured to these end pieces in any suitable manner; as shown, it is secured to them by means of two strips of wood, 0 c, the former being on the outside of piece B, and the latter on the inside of piece B, the ends of the woven wire being placed between the end pieces and the strips (3 c, and secured in place by suitable bolts g. d d are bolts having one part, 0, thereof square, and a screw-thread on the other ends, fitting nuts j which are attached to the inside of the side pieces A; the heads of these bolts are inserted in small cavities near the upper edge of the swinging end piece B.

By means of a wrench applied to the square portion e of the bolt d the tension of the woven wire can be increased or diminished at pleasure.

' Both end pieces may be made adjustable, as described, though it will usually be sufficient to make one adjustable, in which case B may be held in an upright position by brackets a, and the strip a may be bolted to the brackets and side pieces.

By removing the bolts 1) and those which secure the strip 0 in place, the Woven wire and the end pieces can be rolled up, and the whole can be easily packed for shipment.

I make the woven wireFfrom wire composed of two or more strands twisted together before it is coiled, (see Fig. 4,) for the purpose of in creasing its strength without impairing its elasticity.

What I claim as new is as follows:

The straining-bolts (1 cl, in combination with a yielding end piece, B, constructed and operating substantially as and for the purposes specified.

DAVID J POWERS.

Witnesses:

E. A. WEST, 0. W. BOND. 

